Wiring Alpine Vs Kenwood????

Does anyone know if all of the Alpine HU wiring harnesses are the same?
Kenwood has changed in over 10 years. When I pulled the old 1996 model out of my truck (It was one of the original D MASK) I was able to just connect the harness to the X889 I just bought.
I have an older Alpine in a Boat, it doesn’t play MP3, so when I upgrade I am looking for an easy swap. I hope the Alpine HU all use the same harness.